Ultimate Nutrition ARGININE ORNITHINE LYSINE 100 Caps - Ultimate Nutrition Arginine Ornithine Lysine is designed to help in the production of growth hormone to ensure all its health benefits. These amino acids are known to induce growth hormone. These amino acids function in a synchronized manner to block the growth hormone inhibitor, somatostatin. Whereas both arginine and lysine have been shown in clinical studies to induce growth hormone, their effect is potentiated in the presence of ornithine. Even though the body can produce ornithine from dietary arginine, which cannot be produced by the body. Clinical studies have demonstrated that ornithine in combination with arginine and lysine works best in younger individuals, especially those on an active exercise regimen. This "stacking" of amino acids has many health benefits for people in all age groups.